The Kansas City Zoo's Nikita and Berlin are among the 59 polar bears in zoos and Sea Worlds in the United States. The bears range in age from cubs to more than 30 years old. Thursday is International Polar Bear Day.More >

The Kansas City Zoo's Nikita and Berlin are among the 59 polar bears in zoos and Sea Worlds in the United States. The bears range in age from cubs to more than 30 years old. Thursday is International Polar Bear Day.More >

SLIDESHOW

Elvis is a dog based in Shawnee, KS, who has been trained to sniff dozens of fecal samples from 22 polar bears and determine whether the bear is pregnant or not. Elvis has a 95 to 97 percent accuracy rate.More >

Elvis is a dog based in Shawnee, KS, who has been trained to sniff dozens of fecal samples from 22 polar bears and determine whether the bear is pregnant or not. Elvis has a 95 to 97 percent accuracy rate.More >

SLIDESHOW

Berlin has cleared quarantine and is now enjoying her time at the Kansas City Zoo's Polar Bear Passage. She will alternate on exhibit with Nikita until the "howdy" phase of their relationship is complete.More >

Berlin has cleared quarantine and is now enjoying her time at the Kansas City Zoo's Polar Bear Passage. She and the zoo's star attraction, 6-year-old Nikita, will alternate on exhibit until the "howdy" phase of their relationship is complete.More >